Retractable comb



FIG. 1 is a front elevational view of a retractable comb having extended comb bristles, showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left-side elevational view thereof;

FIG. 6 is a right-side elevational view thereof;

FIG. 7 is a perspective view thereof; and

FIG. 8 is a perspective view of a retractable comb when the comb bristles are retracted, showing my new design. 

The ornamental design for a retractable comb, as shown and described. 